# I always have the "Full authentication is required to access this resource" when posting a request **URL:** \ **Category:** Forum\ **Tags:** cumulocity\ **Created:** [June 21, 2023, 2:00pm UTC](https://community.cumulocity.com/t/i-always-have-the-full-authentication-is-required-to-access-this-resource-when-posting-a-request/7839 "2023-06-21T14:00:13Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![albert.avetisyan](https://avatars.discourse-cdn.com/v4/letter/a/c5a1d2/32.png) [@albert.avetisyan](https://community.cumulocity.com/u/albert.avetisyan)\ **Post date:** [June 21, 2023, 2:00pm UTC](https://community.cumulocity.com/t/i-always-have-the-full-authentication-is-required-to-access-this-resource-when-posting-a-request/7839/1 "2023-06-21T14:00:13Z")
PRINCIPAL: **1016.0.259** UI: **1016.0.259** Hello I have been trying to use the Cumulocity API but i always encounter the same problem : ![image](https://europe1.discourse-cdn.com/flex005/uploads/cumulocity/original/3X/b/1/b1a3ecbb6ef7cb3875f0725647e7a6383ddcf150.png) { “error”: “security/Unauthorized”, “message”: “Full authentication is required to access this resource”, “info”: " unavailable link" } my tenant id is : env658352 and my auth is in this form : base64 encoded tenant/username:password i also tried base64 encoded username:password edit : the tenant/username:password are from another user that i created because i couldn’t do it with the primary account as it is “managed through your authorization server” ---
**Author:** ![Robert\_Neale](https://dub1.discourse-cdn.com/flex005/user_avatar/community.cumulocity.com/robert_neale/32/31965_2.png) [@Robert\_Neale](https://community.cumulocity.com/u/Robert_Neale)\ **Post date:** [June 21, 2023, 2:20pm UTC](https://community.cumulocity.com/t/i-always-have-the-full-authentication-is-required-to-access-this-resource-when-posting-a-request/7839/2 "2023-06-21T14:20:07Z")
What url are you accessing? ---
**Author:** ![albert.avetisyan](https://avatars.discourse-cdn.com/v4/letter/a/c5a1d2/32.png) [@albert.avetisyan](https://community.cumulocity.com/u/albert.avetisyan)\ **Post date:** [June 21, 2023, 2:26pm UTC](https://community.cumulocity.com/t/i-always-have-the-full-authentication-is-required-to-access-this-resource-when-posting-a-request/7839/3 "2023-06-21T14:26:11Z")
env658352.eu-latest.cumulocity(.com)/devicecontrol/newDeviceRequests ---
**Author:** ![Robert\_Neale](https://dub1.discourse-cdn.com/flex005/user_avatar/community.cumulocity.com/robert_neale/32/31965_2.png) [@Robert\_Neale](https://community.cumulocity.com/u/Robert_Neale)\ **Post date:** [June 21, 2023, 3:05pm UTC](https://community.cumulocity.com/t/i-always-have-the-full-authentication-is-required-to-access-this-resource-when-posting-a-request/7839/4 "2023-06-21T15:05:25Z")
Can you do GET [https://env658352.eu-latest.cumulocity.com/devicecontrol/newDeviceRequests](https://env658352.eu-latest.cumulocity.com/devicecontrol/newDeviceRequests)? ---
**Author:** ![albert.avetisyan](https://avatars.discourse-cdn.com/v4/letter/a/c5a1d2/32.png) [@albert.avetisyan](https://community.cumulocity.com/u/albert.avetisyan)\ **Post date:** [June 21, 2023, 3:12pm UTC](https://community.cumulocity.com/t/i-always-have-the-full-authentication-is-required-to-access-this-resource-when-posting-a-request/7839/6 "2023-06-21T15:12:12Z")
No it still give me the same error whatever request i make ---
**Author:** ![Robert\_Neale](https://dub1.discourse-cdn.com/flex005/user_avatar/community.cumulocity.com/robert_neale/32/31965_2.png) [@Robert\_Neale](https://community.cumulocity.com/u/Robert_Neale)\ **Post date:** [June 21, 2023, 3:30pm UTC](https://community.cumulocity.com/t/i-always-have-the-full-authentication-is-required-to-access-this-resource-when-posting-a-request/7839/7 "2023-06-21T15:30:54Z")
![image](https://europe1.discourse-cdn.com/flex005/uploads/cumulocity/original/3X/0/7/07eab5f37da3dce05e02ece3690d13843250c9d6.png) It is possible. Can you double check the credentials and url? ---
**Author:** ![albert.avetisyan](https://avatars.discourse-cdn.com/v4/letter/a/c5a1d2/32.png) [@albert.avetisyan](https://community.cumulocity.com/u/albert.avetisyan)\ **Post date:** [June 21, 2023, 3:38pm UTC](https://community.cumulocity.com/t/i-always-have-the-full-authentication-is-required-to-access-this-resource-when-posting-a-request/7839/8 "2023-06-21T15:38:12Z")
I just checked following your method and it seems like my auth is at fault, could it my base64 encoding ? ---
**Author:** ![Robert\_Neale](https://dub1.discourse-cdn.com/flex005/user_avatar/community.cumulocity.com/robert_neale/32/31965_2.png) [@Robert\_Neale](https://community.cumulocity.com/u/Robert_Neale)\ **Post date:** [June 21, 2023, 3:42pm UTC](https://community.cumulocity.com/t/i-always-have-the-full-authentication-is-required-to-access-this-resource-when-posting-a-request/7839/9 "2023-06-21T15:42:20Z")
It could be. Why not just enter plain text in the Username and Password fields in Postman? ---
**Author:** ![Korbinian\_Butz](https://dub1.discourse-cdn.com/flex005/user_avatar/community.cumulocity.com/korbinian_butz/32/10473_2.png) [@Korbinian\_Butz](https://community.cumulocity.com/u/Korbinian_Butz)\ **Post date:** [June 21, 2023, 3:52pm UTC](https://community.cumulocity.com/t/i-always-have-the-full-authentication-is-required-to-access-this-resource-when-posting-a-request/7839/10 "2023-06-21T15:52:19Z")
Just some notes: - Easiest would be indeed to use Postmans User/Pass Fields - When not using that, make sure you are using as Authentication Header “Authorization: Basic {base64 encoded tenant/user:password}”. I see you did not set the " **Basic**" in front of your base64-auth above - Is the tenant using SSO? If yes, note that your SSO User/Pass won’t work with Postman. ---
**Author:** ![albert.avetisyan](https://avatars.discourse-cdn.com/v4/letter/a/c5a1d2/32.png) [@albert.avetisyan](https://community.cumulocity.com/u/albert.avetisyan)\ **Post date:** [June 22, 2023, 8:55am UTC](https://community.cumulocity.com/t/i-always-have-the-full-authentication-is-required-to-access-this-resource-when-posting-a-request/7839/11 "2023-06-22T08:55:58Z")
Hello The cause of my problem was like you said that i didn’t put the " **Basic**" in front of my base64-auth Thank you ! ---
**Author:** ![system](https://dub1.discourse-cdn.com/flex005/user_avatar/community.cumulocity.com/system/32/31990_2.png) [@system](https://community.cumulocity.com/u/system)\ **Post date:** [December 19, 2023, 8:56am UTC](https://community.cumulocity.com/t/i-always-have-the-full-authentication-is-required-to-access-this-resource-when-posting-a-request/7839/12 "2023-12-19T08:56:21Z")
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